Home / 7,989.30-11,009.03-6,185.90

Finding the Fourth Proportional to 7,989.30, 11,009.03 and 6,185.90

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Solution

The fourth proportional to 7,989.30, 11,009.03 and 6,185.90 is: 8,524.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.30 : 11,009.03 = 6,185.90 : x
  2. Step 2: Convert to fraction form
    7,989.30/11,009.03 = 6,185.90/x
  3. Step 3: Cross multiply
    7,989.30x = 11,009.03 × 6,185.90
  4. Step 4: Simplify right side
    7,989.30x = 68,100,755.27
  5. Step 5: Solve for x
    x = 68,100,755.27/7,989.30
  6. Step 6: Final answer
    x = 8,524.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.